Combination tipping and sill hook



- July'6, 1937. G. LE. Roux COMBINATION T IPPING AND SILL HOOK Fil Aug. 5, 195a IIIII 'Illll v 'INVENTOR 'ATT R EY Patented July 6, 1937 UNiTED STATES ATENT OFFHCQE Application August 5,

4 Claims.

This invention relates to such hooks as are used for lifting heavy weights. It is particularly useful in lifting derailed railroad cars which block trafiic on railroads where speed is essential.

In clearing tracks of such cars, it is usually desirable to use a lifting device from which extends a hanger such as a wire rope on the end of which is a hook and to hook such a hook or several hooks under whatever part'of the car happens to be at the bottom and to then raise that edge until the whole car topples over in the opposite direction.

Usually such cars when derailed are right side up, but this device will apply in any case where it is possible to get the tip end of a hook under neath. Under ordinary circumstances there may be a small metal flange along the bottom outside edge of the railroad car and the side extends up at ninety degrees from the bottom. Under such circumstances, the point of this hook which is preferably of hardened metal of'some sort can be brought up underneath and inside such a flange while a shank in extension of the body of the hook medially pivoted on an arm attached to the hanger rests against the side of the car.

When the whole outfit is lifted, the downward pressure on the hook point, which is in advance of the pivot, causes the shank to follow the side of the car until the center of gravity of the car passes beyond a perpendicular line extending up from the edge on which the car is resting, whereupon the car continues to tip, automatically releasing itself from the hook and its shank which is moving around on the pivot with the car up to that time, and to fall over.

However, in the preferred construction, by inserting a pin through lock pin holes, the hook can be used as an ordinary lifting hook without the automatic releasing feature.

By extending a shank upwardly beyond the pivot and on the opposite side from the claw member of the hook, the hook is prevented from slipping out and releasing the load to be lifted before the load is tipped beyond the center of gravity so that it will fall over. The presence of this shank extension causes the hook to cling to the bottom of a load, such as a car, near the edge until the tipping point is reached, upon which the load releases itself from the hook and, as it moves at that point in the same direction as the hardened point of the hook, it clears itself from that point in case the point has imbedded itself in the wood.

In the drawing, Fig. 1 is a side elevation of the hook, with the lock pin removed, engaged under 1933, Serial No. 683,724 (01. 294-82) one edge of an object such as a car body which is to be tipped over. V V

Fig. 2 is a View similar to Fig; l showing th'e position of the parts when the hook has been raised suiiiciently so that the load is releasing itself.

Fig. 3 is a diagrammatic cross sectional view showing a box or car body or similar load resting on the ground in full lines and in dotted lines showing the Various positions as the hook is lifted. The first dotted position shows the load releasing itself and the second dotted position shows the load tipped entirely over.

Fig. 4 is a view similar to Fig. l of the hook with the lock pin in place.

Fig. 5 is a horizontal sectional view looking downonline 5 -5 of Fig. l and Fig. 6 "on line '6r'6.

In the drawing, L represents a load such as a derailed car which is to be tipped over so as to remove it from the tracks. I2 represents a side which is perpendicular to the floor or bottom l0, ll representing the edge between them and I 3 representing an angle iron such as is frequently found as a part of such cars.

H represents a hanger shown as a cable at the end of which is a metal pivot holder 20 for a pivot such as 22.

A is an arm hung at one end on pivot 22 and having at its other end a hook pivot 23 and through its shank 2| the lock pin hole 24.

C represents a hook medially pivoted on pivot 23 at 33 and having a shank 3l which extends beyond the pivot point 33 in a direction opposite from the claw part 31. Said shank has the wings 30 through which are look pin holes 34, 34 adapted to register with the lock pin hole 2 3 in the arm A and to be locked in place therewith by a lock pin P. The front 35 of this shank when so locked is so made as to be substantially parallel with the vertical hanger such as H and 2t and the'claw member 31 extends down from the pivot and thence curves around at 38 to a hardened metal point 39 which will be in front of the face 35 of shank 3| when the parts are locked together and will also be in front of such shank when, as shown in Fig. 1, look pin P is removed, but the part 35 rests against the side l2 of car L.

The hook pivot 23 is so located and the weight of the claw member 31 at 38 and 39 is so distributed that when the hanger H suspends the arm A and the hook C, the shank 3! is maintained by gravity in a substantially verticalposition.

The claw of the hook can, therefore, be swung on its rope so that the point willgo under the edge of the load and when lifted, it will bite in and hang on to the load with the shank resting agaist the side of the load and following it along until the load passes beyond its center of gravity and releases itself from the hook, all without the human hand touching any part of the hook.

With lock pin P in place in holes 34, 34 and 24, as shown in Fig. 4, the device can be used as an ordinary lifting hook which will not release its load, but with pin P removed, it will act as shown in Fig. 3.

A car L is derailed and resting with its floor Ill and one bottom edge I2 on the ground T. Hook C is brought under edge I I and iron I3 with front face 35 of shank 3I resting against side I2. As hook A is lifted by hanger H, shank 3| follows I2 as shown in the dotted lines until the center of gravity of L passes over pivot edge I2 when edge I I will release itself and iron I3 from hook A and the car L will topple over.

I claim:

1. In a wrecking device, the combination of a vertical hanger; with an arm pivotally hung at one end thereto, said arm having a hook pivot at its other end and a lock pin hole between the ends; a hook medially pivoted to the bottom of the arm and having a shank which extends upwardly in front of said arm, said shank having wings with lock pin holes adapted to register with the lock pin hole in the arm, the front of the shank being substantially parallel with the vertical hanger, and a claw member extending down from the pivot and up to a hardened metal point in front of the face of the shank; and a lock pin which passes through the pin holes in the wing and the shank.

2. In a wrecking device, the combination of a vertical arm having a hook pivot and a lock pin hole; with a hook medially pivoted to the bottom of the arm and having a shank which extends upwardly in front of said arm, said shank having wings with lock pin holes adapted to register with the lock pin hole in the arm, the front of the shank being substantially parallel with the vertical hanger, and a claw member extending down from the pivot and up to a hardened metal point in front of the face of the shank; and a lock pin which passes through the pin holes in the wing and the shank.

3. In a wrecking device, the combination of a vertical hanger; with an arm pivotally hung at one end thereto, said arm having a hook pivot at its other end; a hook medially pivoted to the bottom of the arm and having a shank which normally extends upwardly in front of said arm, the front of the shank being substantially parallel with the vertical hanger, and a claw member extending down from the pivot and up to a hardened metal point in front of the face of the shank; and means for securing the shank of the hook to the arm when the hook is in load supporting position.

I 4. In a wrecking device, the combination of a vertical arm having a hook pivot; with a hook medially pivoted to the bottom of the arm and having a shank which normally extends upwardly in front of said arm, the front of the shank being substantially parallel with the vertical arm, and a claw member extending down from the pivot and up to a point in front of the face of the shank; and means for securing the shank of the hook to the arm when the hook is in load supporting position.-

GEORGE LE ROUX. 

